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Centrifugal pumps for petroleum, petrochemical and natural gas industries
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Centrifugal pumps for petroleum petrochemical and natural gas industries
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Centrifugal pumps for refinery, chemical and petrochemical processes--General technical specifications
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Basic data
| Standard ID | GB/T 3215-2025 (GB/T3215-2025) |
| Description (Translated English) | Centrifugal pumps for petroleum, petrochemical and natural gas industries |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J71 |
| Classification of International Standard | 23.080 |
| Word Count Estimation | 214,212 |
| Date of Issue | 2025-12-31 |
| Date of Implementation | 2026-04-01 |
| Older Standard (superseded by this standard) | GB/T 3215-2019 |
| Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China |
GB/T 3215-2025: Centrifugal pumps for petroleum, petrochemical and natural gas industries
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 23.080
CCSJ71
National Standards of the People's Republic of China
Replaces GB/T 3215-2019
Centrifugal pumps for the oil, petrochemical and natural gas industries
(ISO 13709.2009, MOD)
Published on 2025-12-31
Implemented on April 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface VII
Introduction XIV
1.Scope 1
2 Normative References 1
3.Terms and Definitions 5.
4 General Provisions 11
4.1 Unit Responsibilities 11
4.2 Classification and Naming 11
5.Technical Requirements 18
5.1 Unit 18
5.2 Regulatory Requirements 18
5.3 Required Level 18
6 Basic Design 18
6.1 General Provisions 18
6.2 Pump type 22
6.3 Pressure Shell 22
6.4 Pipe and pressure housing interfaces 24
6.5 External forces and torques acting on the nozzle 26
6.6 Rotor 31
6.7 Wear ring and operating clearance 32
6.8 Mechanical Seal 33
6.9 Dynamics 36
6.10 Bearings and bearing housings 46
6.11 Lubrication 50
6.12 Material 50
6.13 Nameplates and turn signs 54
7 Auxiliary equipment 55
7.1 Drive motor 55
7.2 Couplings and Covers 57
7.3 Base 58
7.4 Instruments and Meters 62
7.5 Piping and Accessories 63
7.6 Special Tools 64
8.Inspection, testing, and pre-shipment preparations 64
8.1 General Rules 64
8.2 Check 65
8.3 Experiment 67
8.4 Preparations before shipment 73
9 Specific pump types 74
9.1 Single-stage cantilever pump 74
9.2 Two-end supported pumps (BB1, BB2, BB3 and BB5 models) 75
9.3 Vertical Suspended Pumps (VS1~VS7 types) 80
10 Seller Information 86
10.1 General Rules 86
10.2 Quotation 87
10.3 Engineering Design Data 88
Appendix A (Informative) A list of structural number comparisons between this document and ISO 13709.2009 92
Appendix B (Informative) Technical Differences Between This Document and ISO 13709.2009 and Their Reasons 95
Appendix C (Informative) Centrifugal Pump Data Sheets and Electronic Data Interchange 106
Appendix D (Normative) Hydraulic Recovery Turbine 126
Appendix E (Informative) Specific Speed and NPSH 130
Appendix F (Normative) Schematic diagram of cooling water and lubrication system 131
Appendix G (Normative) Pump Component Materials and Material Technical Specifications 137
Appendix H (Normative) Piping Design Guidelines 150
Appendix I (Informative) Shaft Stiffness and Bearing System Life 161
Appendix J (Informative) Material Grade Selection Guide 165
Appendix K (Normative) Standard Base 167
Appendix L (Informative) Inspector's Checklist 169
Appendix M (Informative) Summary Table of Test Data 171
Appendix N (Informative) Seller's Drawings and Documents 176
Appendix O (Normative) Horizontal Analysis 183
Appendix P (Normative) Methods for Determining Residual Unbalance 188
References 194
Figure 1 OH1 type pump 12
Figure 2 OH2 type pump 12
Figure 3 OH3 type pump 12
Figure 4 OH4 type pump 13
Figure 5 OH5 type pump 13
Figure 6 OH6 type pump 13
Figure 7 BB1 type pump 14
Figure 8 BB2 type pump 14
Figure 9 BB3 type pump 15
Figure 10 BB4 type pump 15
Figure 11 BB5 type pump 15
Figure 12 VS1 type pump 16
Figure 13 VS2 type pump 16
Figure 14 VS3 type pump 16
Figure 15 VS4 type pump 17
Figure 16 VS5 pump 17
Figure 17 VS6 type pump
Figure 18 VS7 pump
Figure 19.Machined surface 25 of the cylindrical threaded interface gasket seal.
Figure 20 Typical reinforcement plate design 26
Figure 21 Coordinate system for force and torque of vertical inline pump 28
Figure 22 Coordinate system for force and torque of vertical suspended pump and double-casing pump 29
Figure 23.Coordinate system of force and torque for horizontal pumps with side suction and side discharge ports.
Figure 24.Coordinate system of force and torque of horizontal pump with end suction top outlet. 30
Figure 25.Coordinate system of force and torque of horizontal pump at top nozzle 30
Figure 26 Diagram of the sealing cavity 34
Figure 27 Schematic diagram of coaxiality measurement of the sealed cavity 35
Figure 28 Schematic diagram of end face runout measurement of the sealed cavity 36
Figure 29 Torsion Analysis Flowchart 37
Figure 30 Relationship between flow rate and vibration 39
Figure 31 Vibration measurement position on OH and BB type pumps 40
Figure 32 Vibration measurement location on VS type pump 41
Figure 33 Vibration measurement positions on OH3 and OH6 type pumps 42
Figure 34 Vibration limit for high-energy horizontal pumps 44
Figure 35 Determination of the dimensions of rotating parts when balancing is allowed on one side 45
Figure 36 Vertical pump drive - required dimensional and positional tolerances for the drive shaft and base 56
Figure 37 Integrated panel base with drainage groove 59
Figure 38 Sloping integral panel base 59
Figure 39 Panel base with partial slope 59
Figure 40 OH2 type pump base seal flushing scheme or auxiliary system installation position 60
Figure 41 Spacing between guide bearings 82
Figure 42 Thrust bearing arrangement of the double coupling 83
Figure 43 Typical installation of VS6 and VS7 pumps (with base plate) 84
Figure C.1 Centrifugal Pump Data Sheet (SI Units) 107
Figure C.2 Centrifugal Pump Data Sheet (USC Units) 114
Figure C.3 Centrifugal Pump Data Table Field Value Selection Guide 121
Figure D.1 Typical arrangement of a hydraulic recovery turbine 127
Figure D.2 Performance tolerance of hydraulic recovery turbine (129)
Figure F.1 Equipment Symbols and Names 131
Figure F.2 Cantilever pump piping – Scheme A. Cooling water to bearing housing 132
Figure F.3 Cantilever Pump Piping – Scheme K. Cooling water leads to the bearing housing and simultaneously connects in parallel to the sealed heat exchanger 132.
Figure F.4 Cantilever pump piping – Scheme M. Cooling water to a sealed heat exchanger 133
Figure F.5 Cantilever pump piping – Scheme M. Cooling water leads to a sealed heat exchanger and receiver tank. 133
Figure F.6 Two-end supported pump piping – Scheme A. Cooling water to bearing housing 134
Figure F.7 Two-end supported pump piping – Scheme K. Cooling water leads to the bearing housing and simultaneously connects in parallel to the sealed heat exchanger 134
Figure F.8 Two-end supported pump piping – Scheme M. Cooling water to a sealed heat exchanger 135
Figure F.9 Two-end supported pump piping – Scheme M. Heat exchanger 135 for cooling water to the seal and storage tank.
Figure F.10 Class II - P0 - R1 - H0 - BP0 (or BP1) - C1F2 - C0 - PV1 - TV1 - BB0 136
Figure I.1 Simple cantilever rotor 161
Figure I.2 Relationship between the shaft flexibility index and dimensional factor of a cantilever pump (SI units) 162
Figure I.3 Relationship between shaft flexibility index and dimensional factor of cantilever pump (USC units) 163
Figure K.1 Schematic diagram of standard base dimensions 168
Figure M.1 Summary of Experimental Data 171
Figure M.2 Test curve format (SI unit system) 173
Figure M.3 Experimental curve format (USC units) 174
Figure M.4 Test point 175 on a typical test curve
Figure N.1 Example of Distribution Record 176
Figure O.1 Relationship between damping coefficient and frequency ratio 185
Figure O.2 Typical Campbel Figure 186
Figure P.1 Residual Unbalance Work Order 190
Figure P.2 Residual Unbalance Worksheet --- Polar Coordinate Graph 191
Figure P.3 Example of a work order for residual unbalance 192
Figure P.4 Best Fit of Residual Unbalance (Figure 193)
Table 1 Pump Classification Type Identification 11
Table 2 Cooling Water System - Water Side Conditions 20
Table 3 Special Design Characteristics of Special Pump Types 22
Table 4 Casting Coefficient 23
Table 5 Nozzle Load 27
Table 6 Minimum internal operating clearance 32
Table 7 Standard Dimensions of Sealing Cavities, Sealing Gland Accessories, and Container Mechanical Seal Shaft Sleeves 34
Table 8 Vibration limits for cantilever pumps and pumps with two-end supports 43
Table 9 Vibration Limits for Vertical Suspended Pumps 43
Table 10 Bearing Selection 46
Table 11 Welding Requirements 53
Table 12 Rated Power of Electric Motors 55
Table 13 Stiffness Test Acceptance Criteria 62
Table 14 Inspection Requirements for Pressure Shell and Process Piping Materials 65
Table 15 Material Inspection Standards 66
Table 16 Performance Tolerance 68
Table 17 Shaft and Rotor Runout Requirements 76
Table 18 Judgment Logic for Rotor Lateral Analysis 77
Table 19 Rotor Balance Requirements 78
Table 20 Recommended Spare Parts 89
Table A.1 Comparison of this document's structural number with ISO 13709.2009 92
Table B.1 Technical Differences Between This Document and ISO 13709.2009 and Their Reasons 95
Table G.1 Material Grade 138 for Pump Components
Table G.2 Technical Specifications for Pump Component Materials 140
Table G.3 Non-metallic wear-resistant parts materials 148
Table G.4 Piping Materials 148
Table H.1 Pump inlet diameter and location coordinates of Example 1A 153
Table H.2 Example 1A Pump inlet external load 153
Table H.3 Example 2A recommends an external nozzle load of 155.
Table H.4 Pump inlet diameter and location coordinates of Example 1B 156
Table H.5 Example 1B Pump inlet external load 156
Table H.6 Example 2B recommends an external nozzle load of 159.
Table J.1 Material Grade Selection Guidelines 165
Table K.1 Standard base size 167
Table L.1 Inspector's Checklist 169
Table O.1 Rotor Lateral Analysis Logic 183
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB/T 3215-2019 "Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries". Compared with GB/T 3215-2019, except for...
Aside from structural adjustments and editorial changes, the main technical changes are as follows.
---The definition of "traditional rigidity" has been changed (see 3.8,.2019 version 3.8);
---The term "maximum permissible speed" has been changed to "maximum continuous speed" (see 3.19,.2019 edition of 3.19);
---The definition of "maximum discharge pressure" has been changed (see 3.22,.2019 version 3.22);
---The pump classification designation has been changed (see Table 1,.2019 version of Table 1);
---Added the distinction and illustration for BB1 pump base mounting BB1-A and near-centerline mounting BB1-B (see 4.2.2.7);
---The illustrations for VS1, VS6, and VS7 pumps have been revised (see 4.2.2.12, 4.2.2.17, and 4.2.2.18; 4.2.2.12 in the.2019 version).
4.2.2.17 and 4.2.2.18);
---The requirement that the equipment have a service life of at least 20 years (excluding consumable parts) and a continuous operating life of at least 3 years has been removed (see.2019).
(6.1.1 of the.2018 edition)
---Added the requirement that the equipment must be buyer-approved and field-verified, and how to obtain field verification (see 6.1.1);
---Added the requirement that "for variable speed pumps (ASD), the seller shall determine the minimum permissible speed of the equipment and keep a record" (see 6.1.5);
---The NPSHA reference elevation requirements for vertical inline pumps and suspended pumps have been changed (see 6.1.8,.2019 version of 6.1.8);
---Added pumps with an outlet diameter greater than 80mm; at any given flow point within the pump's optimal operating range, the head between parallel pumps...
The difference should not exceed 3% (see 6.1.11);
---Added the requirement that the flow rate at the end of the curve be defined as 120% of the flow rate at the optimal efficiency point (see 6.1.12);
---The requirement that low specific speed pumps should indicate the expected flow limit on the quotation curve has been removed (see 6.1.12 of the.2019 version);
---Added the criterion relationship between minimum temperature rise in the cooling system and heat exchanger surface velocity, as well as the buyer's approval principle (see 6.1.20);
---The requirement for a self-priming pump with a front-mounted self-priming device has been added (see 6.1.22);
---Added information on the impact of on-site factors on pump performance, and on-site witnessing of the project by the seller's representative (see 6.1.27);
---The ANSI/ASME B1.1 thread specification has been amended (see 6.1.30, 6.1.29 in the.2019 edition);
---The definition of maximum discharge pressure has been changed (see 6.3.1,.2019 version of 6.3.1);
---Added the maximum operating pressure requirement for the hydraulic recovery turbine pressure housing and turbine outlet safety protection measures (see 6.3.5);
---Added operating conditions for radially split shells (see 6.3.9);
---Added requirements for the surface roughness of the sealing surface where the spiral wound gasket is placed (see 6.3.12);
---The requirement for cast iron flanges has been removed (see 6.4.2.2 in the.2019 version);
---The requirements for GB/T 13402 (Large Diameter Class) have been amended to explicitly specify that it refers to Series B flanges (see 6.4.2.2,.2019 version).
6.4.2.2);
---Added tolerance requirements for the outer diameter of Class flanges (see 6.4.2.3);
---Added requirements for selecting pipe thread connection methods (see 6.4.3.2);
---The interface material welded to the pump casing should be selected based on the temperature limit of 260℃ for the piping material requirements (see...).
6.4.3.4);
---The requirement for cast iron pressure pump housings has been removed (see 6.4.3.6 in the.2019 version);
---The requirement of a 1.5mm gap between the end of the socket-welded pipe and the socket face has been added (see 6.4.3.6);
---The prerequisite for using pipe threads has been removed and adjusted to 6.4.3.2 (see 6.4.3.7 and 6.4.3.8 in the.2019 version);
---The requirement for a maximum pipe size of DN25 for auxiliary pipeline reinforcement has been added (see 6.4.3.10);
---The requirement for threaded interfaces on cast iron materials has been removed (see 6.4.3.11 in the.2019 version);
---Added requirements for threaded connections on sealing glands or pipeline pumps (see 6.4.3.11);
---Added requirements that shafts should be integral structures and that multi-segment shafts should be subject to buyer approval (see 6.6.9);
---Added a requirement that axis runout should be recorded relative to a permanent marking on the axis (such as a keyway) (see 6.6.13);
---A method for fixing non-metallic wear-resistant rings has been added (see 6.7.3);
---Added requirements for vertical TIR measurement of cantilever pumps (see 6.8.4);
---The requirements for the flushing hole interface at the center of the sealed cavity have been changed (see 6.8.9,.2019 version of 6.8.9);
---The naming conventions for steady-state and transient response analyses in torsion analysis and the torsion analysis flowchart have been changed (see 6.9.2,.2019 version).
6.9.2);
---The requirements for the vibration test point and probe installation orientation during performance testing have been changed (see 6.9.3.2,.2019 version 6.9.3.2);
---Added acceptance requirements for pump vibration values when operating at speeds between the maximum continuous speed and the trip speed (see 6.9.3.7);
---Added descriptions of bearing assemblies and requirements for bearing assemblies in oilfield and pipeline transfer pumps (see 6.10.1.1);
---The limit definitions have been modified, and the speed limit, bearing life limit, and energy density limit have been redefined (see...).
Version 6.10.1.1 (2019 version of 6.10.1.1)
---The applicable conditions for pipeline pump rolling bearing assemblies have been expanded (see Table 10);
---The lifespan of one of the two bearings was changed to be close to 40,000 hours, replacing the previous requirement of 25,000 hours.
Vague wording (see 6.10.1.6,.2019 version of 6.10.1.6);
---Added the requirement that, under specified conditions, angular contact bearings can be mounted on bushings and secured to the shaft with locking devices (see...).
6.10.1.8);
---The requirements for bearing housings of non-forced oil-lubricated bearings have been changed (see 6.10.2.2,.2019 version of 6.10.2.2);
---The requirements for the bearing housing surface temperature and bearing metal temperature of the pure oil mist lubrication system have been increased, and further requirements have been made for these requirements.
The step's annotation (see 6.10.2.4);
---Added requirements for the type of lubricating oil for bearings and bearing housings (see 6.11.1);
---Added a requirement that when providing non-metallic consumable parts, the material grade should be identified by adding the letter C (see 6.12.1.1);
---The supplementary description in the section on material selectivity testing and inspection has been deleted (see 6.12.1.5 in the.2019 edition);
---The condition for providing cast iron structural components has been removed (see 6.12.1.6 in the.2019 version);
---Added execution standards for welding requirements (see Table 11);
---Added implementation standards for magnetic particle and penetrant testing [see 6.12.3.3d];
---The material requirements for auxiliary piping welded to the alloy steel pump body have been changed (see 6.12.3.4,.2019 version of 6.12.3.4);
---The Celsius temperature values have been changed (see 6.12.4.2, 6.12.4.5, and the.2019 versions of 6.12.4.2 and 6.12.4.5);
---Added standards requiring electric motors to comply with (see 7.1.1);
---The requirements for the perpendicularity of the shaft to the mating surface of the drive mechanism and the flatness of the surface have been changed (see Figure 36, Figure 36 in the.2019 version);
---The balance quality level requirement has been changed from G6.3 to buyer-specified balance quality level (see 7.2.3,.2019 version of 7.2.3);
---The material composition of the coupling cover has been improved [(see 7.2.13)];
---A shaft guard has been added to the exposed area between the pump bearing housing and the mechanical seal, and the guard should be tested for volatile organic compounds.
Clauses regarding access routes, environmental factors, and ventilation, drainage, and other protective measures (see 7.2.13);
---Added four specific base types and three schematic diagrams of base types (see 7.3.1);
---Added a schematic diagram of the installation location of the OH2 type pump flushing scheme or auxiliary system, and the case of using a non-standard base (see 7.3.3);
---The requirement for reserved space for the threaded drain interface has been added (see 7.3.4);
---Added requirements for the minimum exposed area size of the mounting base plate used for leveling purposes (see 7.3.5);
---Added the requirement that the pump layout drawing should indicate the locations where mobile equipment is needed to complete the base grouting (see 7.3.10);
---Added requirements for side supports of non-grouting bases (see 7.3.13);
---Added requirements for non-grouting base universal joints, three-point mounting, anti-seismic spring brackets (AVM), spring brackets, or other types of mounting.
See 7.3.14;
---Requirements for welding and inspection of lifting lugs have been added (see 7.3.16);
---The quality requirements for the drive unit specified in the setting of the alignment set screw have been removed (see 7.3.17 in the.2019 version);
---The requirement for the seller to provide anchor bolts has been added (see 7.3.19);
---Added requirements for the standards that piping should comply with, and the priority of complying with these standards (see 7.5.1.1);
---Added the requirement that flange fasteners for lubricating oil stainless steel piping systems must be stainless steel, and stipulated that galvanized bolts are not acceptable (see...).
7.5.1.7);
---An additional requirement has been added for the blind flange and gasket sealing of the drain port (see 7.5.2.5);
---The requirement for cast iron housings has been removed (see 7.5.2.6 in the.2019 version);
---Added the requirement that the flange or butt flange on the first section of the connector pipe screwed into the sealing gland interface should be a slip-on flange (see...).
7.5.2.8);
---Added the condition for using threaded pipe connections for pipeline pumps with a maximum operating temperature not exceeding 55℃ (see 7.5.2.9);
---The requirement that coolers should be used in parallel has been added (see 7.5.3.2);
---The scope of inspection or testing items agreed upon by the seller has been expanded (see 8.1.1);
---The requirement that straight welds on welded steel pipes used for manufacturing pressure pump housings must be 100% RT has been added (see Table 14);
---The requirements for the inner shell have been revised to Level 1 inspection for pressure shells and process piping materials (see 8.2.2.2,.2019 version 8.2.2.2);
---Added the implementation standards and instructions for material inspection in my country (see Table 15);
---The performance tolerance requirements for tests on pumps with a power output of less than 10kW have been increased (see Table 16);
---Increased the applicability of the hydrostatic test pressure coefficient (see 8.3.2.6);
---The chloride content specification has been changed from 50 mg/kg (50 ppm) to 100 mg/kg (100 ppm) (see...)
8.3.2.8 (2019 version of 8.3.2.8)
---The performance testing requirements have been changed (see 8.3.3.3,.2019 version of 8.3.3.3);
---Added the requirement that there should be no visible lubricating oil leakage during the pump's performance test (see 8.3.3.5);
---Added requirement to completely drain all residual water from BB3 and BB5 pumps after the final test (see 8.3.3.8);
---Added requirement that cavitation testing should comply with GB/T 3216-2016 (see 8.3.4.3.1);
---The requirements for the specified flow rate test point when conducting Class I cavitation tests have been changed (see 8.3.4.3.1,.2019 version 8.3.4.3.1);
---Added acceptance standards and improvement measures for bearing housing resonance tests; the continuous operating speed range should be specified for speed-regulating pumps.
See 8.3.4.7;
---Requirements for spare parts testing have been added (see 8.3.4.8);
---Added pre-shipment alignment and alignment report requirements (see 8.4.2);
---Added warning and precautionary requirements for equipment or materials containing or coated with chemicals (see 8.4.13);
---The requirement for connecting short pipes has been removed (see 9.2.1.5 in the.2019 version);
---The requirements for tightening the hydraulic bolts on the mating surface of the main housing of BB3 and BB5 pumps have been added (see 9.2.1.5);
---Acoustic analysis requirements have been added for the crossflow channels of BB3 and BB5 pumps (see 9.2.1.6);
---Added requirements for standard pump lubrication systems (see 9.2.6.2);
---Added a warning to exercise caution when selecting ISO 10438-2 forced lubrication systems (see 9.2.6.4);
---Added a requirement that no further testing is needed after final assembly (see 9.2.7.5);
---The requirements for the alignment screws of the horizontal adjusting shaft of the vertical suspension pump drive have been added (see 9.3.1.3);
---Added specifications for elliptical and flat heads, and the requirement that welds should be full penetration welds (see 9.3.2.4);
---Added the requirement that imported tanks or cylinders should use elliptical or spherical caps (see 9.3.2.5);
---The requirement that the welded steel pipe for the pressure pump casing and the pump head be 100% RT has been added (see 9.3.2.6);
---Added a provision requiring that pump heads, inlet tanks, or cylinders be manufactured using seamless steel pipes, and specifying the standards for the steel pipes (see 9.3.2.7);
---The requirement has been added that pumps with a guide shell outer diameter of less than.200mm can use 8mm fasteners (see 9.3.2.8);
---The requirements for the total runout value of the entire shaft length and the regulations for the runout value of ultra-long shafts have been removed (see 9.3.3.1 in the.2019 version);
---The requirement for installing shaft sleeves between stages of vertically suspended pumps has been removed (see 9.3.4.1 in the.2019 version);
---The content regarding maintaining a safe interval between the natural frequency and operating speed of vertical suspension pumps has been removed (see the.2019 version).
9.3.5);
---Added content on maintaining a safe distance between the natural frequency and operating speed of vertical suspension pumps, vibration mode analysis, and structural dynamics.
Notes on application and methods, and operational evaluation when the interval margin cannot be met, etc. (see note 9.3.5)
1, Note 2, Note 3 and Note 4);
---Added requirements for installing mechanical seals and rigid couplings for vertical pumps without integrated bearing housings, as well as the installation of mechanical seals.
The requirements for couplings in vertical pumps with integrated thrust bearing housings are specified, and a thrust bearing arrangement diagram for double couplings is added.
(Figure 42) (See 9.3.8.2);
---The component composition of the pressure housing of VS1 and VS2 pumps has been changed, clarifying that the only pressure component is the discharge seat (see 9.3.10.1,.2019).
Version 9.3.10.1);
---The component composition of the pressure housing of the VS3 pump has been changed, clarifying that the only pressure component is the discharge seat (see 9.3.11.1,.2019 version).
9.3.11.1);
---The clause concerning the pressure-bearing components of VS4 and VS5 type pumps that are required for pressurized closed systems has been deleted (see 9.3.12.3 in the.2019 edition);
---Increased the maximum suction pressure of VS4 and VS5 pumps in closed systems, as well as the pressure requirements of the sealing chamber, pump end cover, and tank end cover.
See 9.3.12.8;
---Added the requirement to include lifting method diagrams for pumps, packaging boxes, major components, and auxiliary systems in the drawings [see...]
10.2.2.1e)];
---Added requirements for cavitation specific speed and finite life design [see 10.2.3n) and 10.2.3q];
---The requirements for test facility restrictions have been changed from double-suction pump installation restrictions to speed restrictions [see 10.2.3o],.2019 version.
10.2.3o)];
---The timeline for buyer's document review has been changed, stipulating that the buyer should review the documents immediately upon receiving them from the seller (see 10.3.1.3,.2019 version).
(10.3.1.3)
---Specific requirements for progress reports have been added (see 10.3.3);
---Added the option to provide exploded views of equipment (see 10.3.4.1);
---The requirement that the seller should promptly provide the buyer with a final parts list has been removed (see 10.3.4.2 in the.2019 version);
---Added requirements regarding the format, quantity, and timeframe for providing the buyer with documentation materials for review and discussion (see 10.3.5.1);
---Some specific requirements regarding hoisting have been removed from the usage, maintenance, and technical data manuals (see 10.3.5.3 in the.2019 edition);
--- Changed the requirement that if the HPRT and other equipment in the unit cannot withstand the calculated runaway speed, an overspeed trip device should be provided.
Please find (see D.3.3.1,.2019 edition of D.3.3.1);
---The decision to provide a quick shutdown and switching system, previously recommended by device characteristics, is now determined by the buyer (see D.3.3.3).
(D.3.3.3,.2019 version)
---A diagram illustrating dual-drive has been added (see Figure D.1);
---The requirements for HPRT overspeed trip device testing have been changed from general reminders and recommendations to a user-determined decision regarding whether to conduct the test.
Requirements for fast trip device testing and overspeed trip testing (see D.4.4,.2019 edition of D.4.4);
---Added cantilever pump piping diagram scheme M, with cooling water leading to a sealed heat exchanger and a liquid storage tank heat exchanger (see Figure F.5);
---Added a two-end supported pump piping diagram scheme M, with cooling water leading to the heat exchanger between the seal and the storage tank (see Figure F.9);
---Added descriptions of the title, base, and gas station model (see Figure F.10);
---The four material grades I-1, I-2, S-1, and S-3 have been removed (see Appendix G of the.2019 edition);
---The material grades for some applications and the temperature ranges for some non-metallic materials have been changed (see Appendix G, see the.2019 edition).
Record G);
---The requirement to use 12% chromium steel in S-6 grade materials when the temperature of the medium conveyed by the boiler feedwater pump exceeds 175℃ has been removed (see [link]).
Table G.1 (2019 edition)
---The guide shell material for VS6 and VS7 type pipeline pumps (not exceeding 55℃) can be selected as S-6 grade material (see Table G.1);
---The footnotes for grades I-1 and S-3 materials have been deleted (see Table G.1 in the.2019 edition);
---The technical specifications for pump component materials have been changed (see Table G.2,.2019 version of G.2).
---The technical specifications for materials used in pressure-bearing cast iron components have been removed (see Table G.2 in the.2019 edition);
---Added technical specifications for pipe fittings of 12% chromium steel grade, as well as footnotes for temperature application instructions (see Table G.2);
---Added a note regarding the preferred use of 304/304L austenitic stainless steel under moderate corrosion conditions (see Table G.2);
---The requirement for differential pressure on worn parts, limited to 25mm length units, has been removed (see G.3,.2019 edition);
---Added restrictions on threaded interfaces and requirements for flange connection bolts to be made of PTEF-coated alloy material or stainless steel (see...).
G.4);
---Four standard base numbers (0.5~2.0) have been removed (see Appendix K in the.2019 edition);
---The position of the term and definition of “residual imbalance” has been changed (see 3.65, p.2.1 of the.2019 edition).
This document is modified to adopt ISO 13709.2009 "Centrifugal pumps for the petroleum, petrochemical and natural gas industries".
This document has undergone significant structural adjustments compared to ISO 13709.2009.A table comparing the structural numbering changes between the two documents is provided.
See Appendix A.
This document differs significantly from ISO 13709.2009.The relevant clauses are indicated in vertical margins.
Single lines (|) are indicated. A summary of these technical differences and their causes is provided in Appendix B.
The following editorial changes have been made to this document.
---Added a comment to section 5.3.1 explaining what a typical document also includes;
---Added a note to section 6.1.8 to remind users to pay attention to the NPSH baseline elevation;
---The comments for version 6.1.12 have been removed;
---Added a note to 6.1.13 explaining that operating within the range recommended in this clause typically yields the minimum power requirements;
---Corrected an error in the wording of ISO 13709.2009; in section 6.1.15 (see 6.1.6), change it to (see 6.1.4);
---Corrected an error in the wording of ISO 13709.2009; in Table 3, (6.1.24) was changed to (6.1.25);
---Added a note to 6.1.30 indicating that bolt coatings can affect thread grade and fastening requirements;
---The comment regarding maximum discharge pressure in section 6.3.1 has been removed;
---Notes 2 and 4 in section 6.3.5 concerning the ISO 7005-1 flange specification have been deleted;
---Added a note to section 6.4.2.1, explaining that disassembling the pump casing during maintenance does not require disassembling a large section of pipeline;
---Corrected an error in ISO 13709.2009 by changing 6.7.4c) (see Table H.4) to [see Table G.3 (corresponding)].
Table H.3 of ISO 13709.2009;
---Corrected the error in ISO 13709.2009 that section 6.3.5c was missing; in section 6.8.13, "[see 6.3.5c]" was changed to "(see 3.23 and 3.25)".
---Added a note to section 6.9.2.5, explaining the key focus on VFD torque response;
---The example in version 6.9.2.14 has been removed;
---Added note 1 to version 6.10.1.8, explaining the thrust bearing and shaft fit that some users are more accustomed to using;
---The footnote about "Monel" in 6.13.5 has been deleted;
---A note has been added to section 7.2.4, stating that the buyer may specify ISO 10441 coupling requirements;
---Added notes 1 and 2 to section 7.4.2.2, explaining the points that require special attention when selecting and configuring vibration detectors;
---Added a note to section 7.4.2.3 explaining the issues that need to be considered when using tilting pad radial bearings;
---Corrected an error in the wording of ISO 13709.2009 by changing "(see 6.4.3.10)" in sections 7.5.1.8 and 7.5.2.8 to "(see 6.4.3.11)".
---Corrected an error in the wording of ISO 13709.2009; changed "(see 6.1.8)" in section 8.3.3.3 to "(see 6.1.15)".
---Added a note to section 8.3.4.2.1 to explain the temperature variation range during which the oil temperature stabilizes;
---Corrected an error in the wording of ISO 13709.2009; changed 8.3.4.3.4 (see 8.3.3.5 and 8.4.3.1) to (see 8.3.3.7).
and 8.3.3.8);
---Added a note to section 9.3.13.5 explaining the function of the drain port;
---Corrected an error in ISO 13709.2009 by changing "predicted noise data (6.1.16)" in 10.2.3b) to "predicted".
The noise data (6.1.14)”;
---Corrected an error in ISO 13709.2009 by changing footnote h in Table 20 from "Consumable parts (see 5.1.1)" to "Consumable parts (see
6.1.1);
---Added a copy of the electronic centrifugal pump datasheet in Appendix C;
---The link to spreadsheets in Appendix C has been removed;
---Corrected the labeling error in ISO 13709.2009 and adjusted the sequence of pump and motor numbers in Figure D.1 description;
---Added Notes 3 and 5 to Appendix E, along with the calculation formulas for specific speed and cavitation specific speed in my country;
---Corrected an error in ISO 13709.2009 by changing H.4 in subscript j of table G.1 to G.3 (corresponding to ISO 13709.2009).
(H.3 in the middle)
---Corrected an error in the wording of ISO 13709.2009; the corresponding standard for austenitic stainless steel and pressure castings in Table G.2 has been changed to "G".
Change "5121,CISCS16aSCS16AX" to "G5121,CISCS16ASCS16AX";
---Corrected the incorrect wording in ISO 13709.2009 b...
